/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  color: #fff;
  background-color: #0a0a0a;
  line-height: 1.6;
  overflow-x: hidden;
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
  background: #000;
  border-radius: 3px;
}

/* 容器样式 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 10px;
}

/* 页面样式 */
.page {
  width: 100%;
  position: relative;
}

/* 背景图片通用样式 */
.bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 760px;
  z-index: -1;
}

/* 顶部区域 */
.top-section {
  position: relative;
  display: flex;
  flex-direction: column;
}

/* 导航栏 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  /* max-width: 1200px; */
  z-index: 1000;
  /* border-radius: 20px; */
  /* transform: translateX(-50%); */
  will-change: background-color, backdrop-filter;
  transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
}

.navbar.scrolled {
  background-color: rgba(10, 10, 10, 0.7);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 15px rgb(21 105 15 / 20%);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  margin-left: 10px;
  height: 26px;
  object-fit: contain;
}



.nav-menu {
  display: flex;
  gap: 30px;
}

.nav-item {
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.3s;
  text-decoration: none;
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

.nav-item:nth-child(1) {
  animation-delay: 0.1s;
}

.nav-item:nth-child(2) {
  animation-delay: 0.2s;
}

.nav-item:nth-child(3) {
  animation-delay: 0.3s;
}

.nav-item:hover {
  color: #9AFBBE;
}

/* 移动端菜单按钮 */
.menu-btn {
  /* background: transparent; */
  /* border: none; */
  width: 40px;
  height: 40px;
  display: none;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1001;
  cursor: pointer;
}

.menu-icon {
  width: 20px;
  height: 14px;
}

.close-icon {
  width: 14px;
  height: 14px;
}

/* .menu-icon {
  width: 18px;
  height: 1px;
  background-color: #fff;
  position: relative;
  transition: all 0.3s ease;
}

.menu-icon::before,
.menu-icon::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 1px;
  background-color: #fff;
  transition: all 0.3s ease;
}

.menu-icon::before {
  top: -7px;
}

.menu-icon::after {
  bottom: -7px;
}

.menu-btn.active .menu-icon {
  background-color: transparent;
}

.menu-btn.active .menu-icon::before {
  top: 0;
  transform: rotate(45deg);
  background-color: #fff;
}

.menu-btn.active .menu-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
  background-color: #fff;
} */

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(0, 0, 0, 0.95);
  z-index: 2;
  transform: translateY(-100%);
  transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0);
  padding-top: 100px;
}

.mobile-menu.active {
  transform: translateY(0);
}

.menu-items {
  display: flex;
  flex-direction: column;
  text-align: center;
  width: 88%;
  text-align: left;
  margin: 0 auto;
}

.menu-item {
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  position: relative;
  display: flex;
  align-items: center;
  height: 60px;
  border-bottom: 1px solid #ffffff20;
}

.menu-item:hover {
  color: #00ff88;
  transform: translateY(-3px);
}

.menu-item::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #00ff88, #00ccff);
  transition: width 0.3s ease;
}

.menu-item:hover::after {
  width: 100%;
}

/* 主标题区域 */
.hero-section {
  display: flex;
  padding: 80px 0;
  position: relative;
}

.hero-gap {
  height: 3rem;
}

.hero-content {
  max-width: 400px;
  width: 94%;
  animation: fadeInUp 1s ease;
  position: relative;
  /* padding-top: 65px; */
  margin: 0 auto;
  text-align: center;
  height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.jzl {
  width: 94%;
  max-width: 400px;
  margin: 0 auto;
  text-align: left;
  padding: 30px 0 10px;
  line-height: 1.7;
  font-size: 0.95rem;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
  animation-delay: 0.5s;
}

.bfl {
  width: 94%;
  max-width: 400px;
  margin: 0 auto;
  text-align: left;
  color: #9AFBBE;
  font-size: 17px;
  padding: 0 8px;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
  animation-delay: 0.7s;
}

.mxyl-title-bg {
  position: absolute;
  height: 8.2rem;
  left: 0;
  top: 0;
  z-index: -1;
  object-fit: contain;
  opacity: 1;
}

.hero-title {
  font-size: 30px;
  font-weight: bold;
  color: #9AFBBE;
}

.hero-subtitle {
  font-size: 22px;
  margin-bottom: 9px;
  color: #9AFBBE;
}

.hero-desc {
  font-size: 0.9rem;
  color: #9AFBBE;
}

/* 视频容器 */
.video-container {
  display: inline-block;
  position: relative;
  width: 94%;
  max-width: 400px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
  animation-delay: 0.9s;
  cursor: pointer;
}

.video-container .video {
  width: 395.5px;
  height: auto;
}

.video-container .ai-job-item & {
  width: 100%;
}

.video-container .ai-job-item .video {
  width: 100%;
  border-radius: 8rpx;
  box-shadow: 0 4rpx 12rpx rgba(0, 0, 0, 0.3);
}

.video-container .ai-job-item .ai-employee-title {
  font-size: 24px;
}

.video-container .ai-job-item .ai-employee-title .bottom {
  font-size: 36rpx;
}

.video-container .ai-job-item .start-icon {
  width: 40rpx;
  height: auto;
}

.video-container .ai-employee-video {
  width: 100%;
  height: auto;
}

.video-container .ai-employee-title {
  font-size: 22px;
  font-weight: bold;
  position: absolute;
  color: #ffffff21;
  left: 50%;
  top: 50%;
  line-height: 1.2;
  transform: translate(-50%, -50%);
  text-align: center;
}

.video-container .ai-employee-title .bottom {
  font-size: 30px;
  white-space: nowrap;
}

.video-container .start-icon {
  height: 28px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

/* AI职位标题 */
.ai-job-title {
  color: #9afbbe;
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 0.625rem;
  text-align: center;
  position: relative;
  padding: 0.8rem 0;
}

.ai-title-bg {
  height: 50px;
  position: absolute;
  top: 0;
  left: 0;
}

/* AI职位区域 */
.ai-job {
  width: 94%;
  max-width: 400px;
  margin: 0 auto;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
  animation-delay: 1.2s;
  /* 大于video-container的0.9s */
}

.ai-job-header {
  margin-bottom: 40px;
}

.ai-job-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  margin-bottom: 50px;
}

.ai-job-item {
  animation: fadeIn 0.5s ease;
  animation-fill-mode: both;
}

.ai-job-item:nth-child(1) {
  animation-delay: 0.1s;
}

.ai-job-item:nth-child(2) {
  animation-delay: 0.2s;
}

.ai-job-item:nth-child(3) {
  animation-delay: 0.3s;
}

.ai-job-item:nth-child(4) {
  animation-delay: 0.4s;
}

.ai-job-item:nth-child(5) {
  grid-column: 1 / 2;
  animation-delay: 0.5s;
}

.ai-job-item .video-placeholder {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  background-color: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(0, 255, 136, 0.1);
}

.ai-job-item .video-placeholder:hover {
  box-shadow: 0 10px 25px rgba(0, 255, 136, 0.3);
  border-color: rgba(0, 255, 136, 0.3);
}

.job-video {
  width: 100%;
  display: block;
  transition: all 0.3s ease;
}

.ai-job-item .video-placeholder:hover .job-video {
  opacity: 1;
}

.job-title {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #ffffff20;
  font-size: 16px;
  font-weight: bold;
  text-align: center;
  z-index: 1;
  width: 100%;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  letter-spacing: 1px;
  transition: all 0.3s ease;
}

.play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 22px;
  z-index: 1;
  transition: all 0.3s ease;
  opacity: 0.8;
}

/* 企业证书区域 */
.certificates-section {
  position: relative;
  padding: 10px 0;
  background: #0a0a0a;
  z-index: -1;
  opacity: 0;
  animation: fadeInUp 1s ease forwards;
  animation-delay: 1.5s;
  /* 大于ai-job的1.2s */
}

.certificates-section .bg-image {
  max-height: 500px;
  top: -180px;
  max-width: 600px;
  right: 0;
  left: auto;
  object-fit: contain;
}

.certificates-content {
  max-width: 400px;
  width: 94%;
  animation: fadeInUp 1s ease;
  position: relative;
  padding-top: 15px;
  margin: 0 auto;
  text-align: center;
}

.certificates-title-bg {
  position: absolute;
  height: 85px;
  left: 0;
  top: 0;
}

.certificates-title {
  font-size: 1.8rem;
  font-weight: bold;
  color: #9AFBBE;
}

.certificates-desc {
  font-size: 0.9rem;
  padding-top: 10px;
  color: #9AFBBE;
}

.certificates-grid {
  text-align: center;
  margin-bottom: 40px;
}

.certificate-item {
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
}

.certificate-item:nth-child(1) {
  animation-delay: 0.3s;
}

.certificate-item:nth-child(2) {
  animation-delay: 0.5s;
}

.certificate-item img {
  padding-top: 30px;
  width: 94%;
  max-width: 400px;
  height: auto;
  transition: transform 0.3s ease;
  cursor: pointer;
}

.certificate-item img:hover {
  transform: scale(1.05);
}

.certificate-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.certificate-row {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 15px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease;
  animation: fadeIn 0.5s ease;
  animation-fill-mode: both;
}

.certificate-row:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.15);
}


.cert-text {
  color: #fff;
  font-size: 16px;
}

/* 联系方式区域 */
.contact-section {
  position: relative;
  opacity: 0;
  animation: fadeInUp 1s ease forwards;
  animation-delay: 1.8s;
  /* 大于certificates-section的1.5s */
}

.contact-section .bg-image {
  bottom: 0;
}

.contact-content {
  width: 94%;
  margin: 0 auto;
  max-width: 400px;
  gap: 60px;
}

.contact-info {
  flex: 1;
  padding: 30px 0 20px;
  width: 100%;
  border-bottom: 1px solid #ffffff20;
  line-height: 2;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
  animation-delay: 0.3s;
}

.contact-item {
  display: block;
  color: #fff;
  font-size: 1rem;
  opacity: 0.9;
  transition: color 0.3s ease;
}

.contact-item:hover {
  color: #9AFBBE;
}

.qr-codes {
  display: flex;
  gap: 30px;
  justify-content: space-between;
  opacity: 0;
  animation: fadeIn 0.8s ease forwards;
  animation-delay: 0.5s;
}

.qr-item {
  padding-top: 20px;
  text-align: center;
  width: 50%;
}

.qr-item img {
  width: 100%;
  margin-bottom: 10px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.qr-item img:hover {
  transform: scale(1.05);
  border-color: #9AFBBE;
}

.qr-item span {
  padding: 0 0 10px;
  color: #fff;
  font-size: 12px;
  display: block;
}

/* 页脚 */
.footer {
  padding: 10px 0 80px;
  text-align: center;
  position: relative;
}

.footer .bg-image {
  top: auto;
  bottom: 0;
  max-width: 500px;
  max-height: 200px;
}

.footer-text {
  color: #fff;
  font-size: 0.8rem;
}

/* 返回顶部按钮 */
.back-to-top {
  cursor: pointer;
  transition: all 0.3s;
  z-index: 1;
  opacity: 0;
  visibility: hidden;
  position: fixed;
  right: 0;
  bottom: 20px;
  color: #000;
  width: 105px;
  height: 30px;
  font-size: 14px;
  font-weight: bold;
  display: flex;
  background-color: rgba(154, 251, 190);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 7% 100%);
  align-items: center;
  justify-content: center;
  padding-left: 20px;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 255, 136, 0.5);
}

.back-to-top img {
  width: 12px;
  height: 7px;
  margin-left: 10px;
}

/* 图片预览弹窗 */
.image-preview {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.image-preview.active {
  opacity: 1;
  visibility: visible;
}

.preview-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
}

.preview-image {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 5px;
}

.preview-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: #fff;
  font-size: 30px;
  cursor: pointer;
  transition: color 0.3s ease;
}

.preview-close:hover {
  color: #00ff88;
}

/* 视频弹窗样式 */
/* 视频播放弹窗 */
.video-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgb(37, 37, 37);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.video-modal-head {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  background: #000;
  padding-right: 20px;
}

.video-modal.active {
  opacity: 1;
  visibility: visible;
}

.video-modal-content {
  position: relative;
  width: 100%;
  /* max-width: 800px; */
}

#modalVideo {
  width: 100%;
  /* border-radius: 5px; */
}



/* 动画效果 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }

  100% {
    transform: scale(1);
  }
}

/* 响应式设计 - 小屏幕 */
@media screen and (max-width: 767px) {
  .nav-menu {
    display: none;
  }

  .menu-btn {
    display: flex;
  }

  .bg-image {
    height: 55rem;
  }


  .hero-section {
    text-align: center;
    padding: 50px 0 0;
  }

  .hero-content {
    /* padding-top: 5rem; */
  }

  /* .mxyl-title-bg {
    top: 3.3rem;
  } */

  .hero-title {
    font-size: 1.8rem;
  }

  .video-gap {
    height: 1rem;
  }

  .hero-subtitle {
    font-size: 1.4rem;
  }

  .hero-buttons {
    justify-content: center;
    flex-wrap: wrap;
  }

  .ai-section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 32px;
  }

  .section-subtitle {
    font-size: 16px;
  }

  .ai-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 0 15px;
  }

  .ai-card {
    padding: 30px 20px;
  }

  .ai-avatar-container {
    width: 90px;
    height: 90px;
    margin-bottom: 20px;
  }

  .ai-avatar {
    width: 90px;
    height: 90px;
  }

  .ai-name {
    font-size: 20px;
  }

  /* .mxyl-title-bg {
    height: 8.2rem;
  } */

  .ai-job {
    margin-top: 40px;
  }

  .ai-job-header {
    margin-bottom: 30px;
  }

  .ai-job-grid {
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
  }

  .ai-job-item:nth-child(5) {
    grid-column: 1;
    max-width: 100%;
  }

  .job-title {
    font-size: 16px;
  }

  .play-icon {
    width: 60px;
    height: 22px;
  }

  .contact-content {
    flex-direction: column;
    gap: 30px;
    text-align: center;
    width: 94%;
    max-width: 400px;
    margin: 0 auto;
    text-align: left;
  }

  .qr-codes {
    padding-top: 20px;
  }

  .qr-item img {
    width: 100%;
  }

  .certificate-list {
    grid-template-columns: 1fr;
  }
}

/* 响应式设计 - 中等屏幕 */
@media screen and (min-width: 768px) and (max-width: 1024px) {

  /* 调整容器宽度和边距 */
  .container {
    max-width: 1400px;
    padding: 0 40px;
  }

  .navbar {
    padding: 1rem 0;
  }

  .bg-image {
    height: 83rem;
  }

  /* 导航栏文字和间距 */
  .nav-menu {
    gap: 50px;
  }

  .nav-item {
    font-size: 18px;
    /* 16px * 1.5 */
  }

  .logo {
    height: 36px;
    /* 26px * 1.5 */
  }

  /* 主标题区域 */
  .hero-content {
    max-width: 600px;
    height: 230px;
    /* 400px * 1.5 */
    /* padding-top: 157.5px; */
    /* 65px * 1.5 */
  }

  .hero-gap {
    height: 4rem;
  }

  .mxyl-title-bg {
    height: 13.5rem;
    /* top: 6.2rem; */
  }

  .certificates-title-bg {
    height: 7.9rem;
  }

  .video-gap {
    height: 3rem;
  }

  .jzl {
    max-width: 600px;
    /* 400px * 1.5 */
    font-size: 1.425rem;
    /* 0.95rem * 1.5 */
    padding: 45px 12px 15px;
    /* 30px 8px 10px * 1.5 */
    line-height: 1.9;
  }

  .bfl {
    max-width: 600px;
    /* 400px * 1.5 */
    font-size: 25.5px;
    /* 17px * 1.5 */
    padding: 0 12px;
    /* 0 8px * 1.5 */
  }

  .ai-job {
    padding-top: 4rem;
  }

  .ai-title-bg {
    height: 4.5rem;
  }

  .hero-title {
    font-size: 45px;
    /* 30px * 1.5 */
  }

  .hero-subtitle {
    font-size: 33px;
    /* 22px * 1.5 */
    margin-bottom: 13.5px;
    /* 9px * 1.5 */
  }

  .hero-desc {
    font-size: 1.35rem;
    /* 0.9rem * 1.5 */
  }

  /* 视频容器 */
  .video-container {
    max-width: 600px;
    /* 400px * 1.5 */
  }

  .video-container .ai-employee-title {
    font-size: 28px;
  }

  .video-container .start-icon {
    width: 84px;
    height: 36px;
  }

  .video-container .video {
    width: 593.25px;
    /* 395.5px * 1.5 */
  }

  /* AI职位区域 */
  .ai-job {
    max-width: 600px;
    /* 400px * 1.5 */
  }

  .ai-job-title {
    font-size: 1.65rem;
    /* 1.1rem * 1.5 */
    margin-bottom: 0.9375rem;
    /* 0.625rem * 1.5 */
    padding: 0.9375rem 0;
    /* 0.625rem * 1.5 */
  }

  .ai-job-header {
    margin-bottom: 60px;
    /* 40px * 1.5 */
  }

  .ai-job-grid {
    gap: 45px;
    /* 30px * 1.5 */
    margin-bottom: 75px;
    /* 50px * 1.5 */
  }

  .job-title {
    font-size: 20px;
  }

  .play-icon {
    width: 84px;
    height: 32.8px;
  }

  /* 企业证书区域 */
  .certificates-content {
    max-width: 600px;
    /* 400px * 1.5 */
    padding-top: 22.5px;
    /* 15px * 1.5 */
  }

  .certificates-title {
    font-size: 2.7rem;
    /* 1.8rem * 1.5 */
  }

  .certificates-desc {
    font-size: 1.35rem;
    /* 0.9rem * 1.5 */
    padding-top: 15px;
    /* 10px * 1.5 */
  }

  .certificates-grid {
    margin-bottom: 60px;
    /* 40px * 1.5 */
  }

  .certificate-item img {
    max-width: 600px;
    /* 400px * 1.5 */
    padding-top: 45px;
    /* 30px * 1.5 */
  }

  .certificate-list {
    max-width: 1200px;
    /* 800px * 1.5 */
    gap: 30px;
    /* 20px * 1.5 */
  }

  .certificate-row {
    gap: 22.5px;
    /* 15px * 1.5 */
    padding: 22.5px;
    /* 15px * 1.5 */
  }

  .cert-text {
    font-size: 24px;
    /* 16px * 1.5 */
  }

  /* 联系方式区域 */
  .contact-content {
    max-width: 600px;
    /* 400px * 1.5 */
    gap: 90px;
    /* 60px * 1.5 */
  }

  .contact-info {
    padding: 45px 0 30px;
    /* 30px 0 20px * 1.5 */
  }

  .contact-item {
    font-size: 1.5rem;
    /* 1rem * 1.5 */
  }

  .qr-codes {
    gap: 45px;
    /* 30px * 1.5 */
  }

  .qr-item span {
    font-size: 18px;
    /* 12px * 1.5 */
    padding: 0 0 15px;
    /* 0 0 10px * 1.5 */
  }

  /* 页脚 */
  .footer {
    padding: 15px 0 120px;
    /* 10px 0 80px * 1.5 */
  }

  .footer-text {
    font-size: 1.2rem;
    /* 0.8rem * 1.5 */
  }

  /* 返回顶部按钮 */
  .back-to-top {
    width: 157.5px;
    /* 105px * 1.5 */
    height: 45px;
    /* 30px * 1.5 */
    font-size: 21px;
    /* 14px * 1.5 */
    padding-left: 30px;
    /* 20px * 1.5 */
  }

  .back-to-top img {
    width: 18px;
    /* 12px * 1.5 */
    height: 10.5px;
    /* 7px * 1.5 */
    margin-left: 15px;
    /* 10px * 1.5 */
  }



  .video-modal-head {
    height: 4.5rem;
  }
}

/* 响应式设计 - 大屏幕 */
@media screen and (min-width: 1024px) {

  /* 调整容器宽度和边距 */
  .container {
    max-width: 1400px;
    padding: 0 40px;
  }

  .navbar {
    padding: 1rem 0;
  }

  .bg-image {
    height: 81rem;
  }

  /* 导航栏文字和间距 */
  .nav-menu {
    gap: 50px;
  }

  .nav-item {
    font-size: 20px;
    /* 16px * 1.5 */
  }

  .logo {
    height: 46px;
    /* 26px * 1.5 */
  }

  .hero-gap {
    height: 4rem;
  }

  /* 主标题区域 */
  .hero-content {
    max-width: 600px;
    height: 230px;
    /* 400px * 1.5 */
    /* padding-top: 157.5px; */
    /* 65px * 1.5 */
  }

  .mxyl-title-bg {
    height: 13.5rem;
    /* top: 6.2rem; */
  }

  .certificates-title-bg {
    height: 7.9rem;
  }

  .video-gap {
    height: 4rem;
  }

  .jzl {
    max-width: 600px;
    /* 400px * 1.5 */
    font-size: 1.425rem;
    /* 0.95rem * 1.5 */
    padding: 45px 2px 15px;
    /* 30px 8px 10px * 1.5 */
    line-height: 1.7;
  }

  .bfl {
    max-width: 600px;
    /* 400px * 1.5 */
    font-size: 25.5px;
    /* 17px * 1.5 */
    padding: 0 12px;
    /* 0 8px * 1.5 */
  }

  .ai-job {
    padding-top: 4rem;
  }

  .ai-title-bg {
    height: 4.5rem;
  }

  .hero-title {
    font-size: 45px;
    /* 30px * 1.5 */
  }

  .hero-subtitle {
    font-size: 33px;
    /* 22px * 1.5 */
    margin-bottom: 13.5px;
    /* 9px * 1.5 */
  }

  .hero-desc {
    font-size: 1.35rem;
    /* 0.9rem * 1.5 */
  }

  /* 视频容器 */
  .video-container {
    max-width: 600px;
    /* 400px * 1.5 */
  }

  .video-container .ai-employee-title {
    font-size: 28px;
  }

  .video-container .start-icon {
    width: 84px;
    height: 36px;
  }

  .video-container .video {
    width: 593.25px;
    /* 395.5px * 1.5 */
  }

  /* AI职位区域 */
  .ai-job {
    max-width: 600px;
    /* 400px * 1.5 */
  }

  .ai-job-title {
    font-size: 1.65rem;
    /* 1.1rem * 1.5 */
    margin-bottom: 0.9375rem;
    /* 0.625rem * 1.5 */
    padding: 0.9375rem 0;
    /* 0.625rem * 1.5 */
  }

  .ai-job-header {
    margin-bottom: 60px;
    /* 40px * 1.5 */
  }

  .ai-job-grid {
    gap: 45px;
    /* 30px * 1.5 */
    margin-bottom: 75px;
    /* 50px * 1.5 */
  }

  /* 企业证书区域 */
  .certificates-content {
    max-width: 600px;
    /* 400px * 1.5 */
    padding-top: 22.5px;
    /* 15px * 1.5 */
  }

  .certificates-title {
    font-size: 2.7rem;
    /* 1.8rem * 1.5 */
  }

  .certificates-desc {
    font-size: 1.35rem;
    /* 0.9rem * 1.5 */
    padding-top: 15px;
    /* 10px * 1.5 */
  }

  .certificates-grid {
    margin-bottom: 60px;
    /* 40px * 1.5 */
  }

  .certificate-item img {
    max-width: 600px;
    /* 400px * 1.5 */
    padding-top: 45px;
    /* 30px * 1.5 */
  }

  .certificate-list {
    max-width: 1200px;
    /* 800px * 1.5 */
    gap: 30px;
    /* 20px * 1.5 */
  }

  .certificate-row {
    gap: 22.5px;
    /* 15px * 1.5 */
    padding: 22.5px;
    /* 15px * 1.5 */
  }

  .cert-text {
    font-size: 24px;
    /* 16px * 1.5 */
  }

  /* 联系方式区域 */
  .contact-content {
    max-width: 600px;
    /* 400px * 1.5 */
    gap: 90px;
    /* 60px * 1.5 */
  }

  .contact-info {
    padding: 45px 0 30px;
    /* 30px 0 20px * 1.5 */
  }

  .contact-item {
    font-size: 1.5rem;
    /* 1rem * 1.5 */
  }

  .qr-codes {
    gap: 45px;
    /* 30px * 1.5 */
  }

  .qr-item span {
    font-size: 18px;
    /* 12px * 1.5 */
    padding: 0 0 15px;
    /* 0 0 10px * 1.5 */
  }

  /* 页脚 */
  .footer {
    padding: 15px 0 120px;
    /* 10px 0 80px * 1.5 */
  }

  .footer-text {
    font-size: 1.2rem;
    /* 0.8rem * 1.5 */
  }

  /* 返回顶部按钮 */
  .back-to-top {
    width: 157.5px;
    /* 105px * 1.5 */
    height: 45px;
    /* 30px * 1.5 */
    font-size: 21px;
    /* 14px * 1.5 */
    padding-left: 30px;
    /* 20px * 1.5 */
  }

  .back-to-top img {
    width: 18px;
    /* 12px * 1.5 */
    height: 10.5px;
    /* 7px * 1.5 */
    margin-left: 15px;
    /* 10px * 1.5 */
  }



  .video-modal-head {
    height: 5rem;
  }
}
